package com.example.lotterysystem.common.config;

import org.springframework.amqp.core.*;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.amqp.support.converter.MessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;


@Configuration
public class DirectRabbitConfig {
    public static final String QUEUE_NAME = "DirectQueue";
    public static final String EXCHANGE_NAME = "DirectExchange";
    public static final String ROUTING = "DirectRouting";


    public static final String DLX_QUEUE_NAME = "DlxDirectQueue";
    public static final String DLX_EXCHANGE_NAME = "DlxDirectExchange";
    public static final String DLX_ROUTING = "DlxDirectRouting";

    /**
     * 死信队列 起名：DlxDirectQueue
     *
     * @return
     */
    @Bean
    public Queue DlxdirectQueue() {
// durable:是否持久化,默认是false,持久化队列：会被存储在磁盘上，当消息代理重启时仍然存在，暂存队列：当前连接有效
// exclusive:默认也是false，只能被当前创建的连接使⽤，⽽且当连接关闭后队列即被删除。此参考优先级⾼于durable
// autoDelete:是否⾃动删除，当没有⽣产者或者消费者使⽤此队列，该队列会⾃动删除。
// return new Queue("DirectQueue",true,true,false);
// ⼀般设置⼀下队列的持久化就好,其余两个就是默认false
        return new Queue(DLX_QUEUE_NAME,true);
    }
    /**
     * DlxDirect交换机 起名：DirectExchange
     *
     * @return
     */
    @Bean
    DirectExchange DlxdirectExchange() {
        return new DirectExchange(DLX_EXCHANGE_NAME ,true,false);
    }
    /**
     * 绑定 将死信队列和交换机绑定, 并设置⽤于匹配键：DirectRouting
     *
     * @return
     */
    @Bean
    Binding DlxbindingDirect() {
        return BindingBuilder.bind(directQueue())
                .to(directExchange())
                .with(DLX_ROUTING );
    }
    /**
     * 队列 起名：DirectQueue
     *
     * @return
     */
    @Bean
    public Queue directQueue() {
// durable:是否持久化,默认是false,持久化队列：会被存储在磁盘上，当消息代理重启时仍然存在，暂存队列：当前连接有效
// exclusive:默认也是false，只能被当前创建的连接使⽤，⽽且当连接关闭后队列即被删除。此参考优先级⾼于durable
// autoDelete:是否⾃动删除，当没有⽣产者或者消费者使⽤此队列，该队列会⾃动删除。
// return new Queue("DirectQueue",true,true,false);
// ⼀般设置⼀下队列的持久化就好,其余两个就是默认false
        //return new Queue(QUEUE_NAME,true);
        //普通队列绑定死信交换机
        return QueueBuilder. durable ( QUEUE_NAME )
                .deadLetterExchange( DLX_EXCHANGE_NAME )
                .deadLetterRoutingKey( DLX_ROUTING ).build();
    }
    /**
     * Direct交换机 起名：DirectExchange
     *
     * @return
     */
    @Bean
    DirectExchange directExchange() {
        return new DirectExchange( EXCHANGE_NAME ,true,false);
    }
    /**
     * 绑定 将队列和交换机绑定, 并设置⽤于匹配键：DirectRouting
     *
     * @return
     */
    @Bean
    Binding bindingDirect() {
        return BindingBuilder.bind(directQueue())
                .to(directExchange())
                .with( ROUTING );
    }
    @Bean
    public MessageConverter jsonMessageConverter(){
        return new Jackson2JsonMessageConverter();
    }
}